what is a signal? please tell me
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an event, action or fact that shows that something exists or is likely to happen.
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a gesture, action, or sound that is used to convey information or instructions, typically by prearrangement between the parties concerned.
Explanation:
In signal processing, a signal is a function that conveys information about a phenomenon. In electronics and telecommunications, it refers to any time varying voltage, current or electromagnetic wave that carries information. A signal may also be defined as an observable change in a quality such as quantity.
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